This document provides instructions for configuring a Cisco router to function as a VPN server using different VPN protocols. It discusses the basic configuration of the router interfaces, routing protocols, AAA authentication, virtual templates, VPDN, and IPSec. Key steps include creating local users, configuring interfaces, enabling AAA with local authentication, defining a virtual template, enabling VPDN with PPTP protocol, and configuring IPSec transforms, policies and dynamic crypto maps.